You are not logged in.

Pages: 1

#1 2022-11-30 15:51:45

vwvw
Member
Registered: 2022-11-30
Posts: 2

No audio sink for DELL Ultrasharp 2721DE

Hello,

I try to connect some headphones via the jack on my USB-C monitor. It works flawlessly on Windows but I can get it to work on Arch Linux.
I'm using PulseAudio and ALSA.

My setup: Lenovo X1 Carbon Gen 5 connected via USB-C to DELL Ultrasharp 2721DE. Headset connected via line-out to the monitor.

Software:
pactl list sinks

Sink #0
	State: RUNNING
	Name: alsa_output.pci-0000_00_1f.3.analog-stereo
	Description: Built-in Audio Analog Stereo
	Driver: module-alsa-card.c
	Sample Specification: s16le 2ch 48000Hz
	Channel Map: front-left,front-right
	Owner Module: 7
	Mute: no
	Volume: front-left: 38340 /  59% / -13.97 dB,   front-right: 38340 /  59% / -13.97 dB
	        balance 0.00
	Base Volume: 65536 / 100% / 0.00 dB
	Monitor Source: alsa_output.pci-0000_00_1f.3.analog-stereo.monitor
	Latency: 20689 usec, configured 20000 usec
	Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
	Properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "CX8200 Analog"
		alsa.id = "CX8200 Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xec340000 irq 142"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9d71"
		device.product.name = "Sunrise Point-LP HD Audio (ThinkPad X1 Carbon 5th Gen)"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "384000"
		device.buffering.fragment_size = "192000"
		device.access_mode = "mmap+timer"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analog Stereo"
		device.description = "Built-in Audio Analog Stereo"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	Ports:
		analog-output-speaker: Speakers (type: Speaker, priority: 10000, not available)
		analog-output-headphones: Headphones (type: Headphones, priority: 9900, available)
	Active Port: analog-output-headphones
	Formats:
		pcm

Sink #1
	State: IDLE
	Name: combined
	Description: Simultaneous output to Built-in Audio Analog Stereo
	Driver: module-combine-sink.c
	Sample Specification: s16le 2ch 44100Hz
	Channel Map: front-left,front-right
	Owner Module: 14
	Mute: no
	Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
	        balance 0.00
	Base Volume: 65536 / 100% / 0.00 dB
	Monitor Source: combined.monitor
	Latency: 0 usec, configured 200000 usec
	Flags: DECIBEL_VOLUME LATENCY 
	Properties:
		device.class = "filter"
		device.description = "Simultaneous output to Built-in Audio Analog Stereo"
		device.icon_name = "audio-card"
	Formats:
		pcm

amixer 

Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 65536
  Mono:
  Front Left: Playback 38340 [59%] [on]
  Front Right: Playback 38340 [59%] [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch cswitch-joined
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 65536
  Front Left: Capture 65535 [100%] [on]
  Front Right: Capture 65535 [100%] [on]

I tried to look into Pulse Audio configuration but can't find anything to change to make it work.

Audio via laptop headphone jack works fine. Do I need extra drivers? My hub is working (I get Ethernet via the USB-C cable).

Any help wlecome!

Last edited by vwvw (2022-11-30 15:53:11)

Offline

#2 2022-11-30 17:04:28

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 23,922

Re: No audio sink for DELL Ultrasharp 2721DE

You need to switch to the HDMI/USB playback device. What do you get from 

sudo dmesg | grep -iE 'snd|usb'
aplay -lL
pactl list cards

? Afaik there might be kernel issues with usb-c to monitor audio, but don't have a direct ref on hand.

Last edited by V1del (2022-11-30 17:05:17)

Online

#3 2022-12-01 15:21:12

vwvw
Member
Registered: 2022-11-30
Posts: 2

Re: No audio sink for DELL Ultrasharp 2721DE

Weird, I subscribed but didn't get the notification of your replyIt ended up in my junk mail. Thanks for the quick follow-up!

Here's the output: 

sudo dmesg | grep -iE 'snd|usb'


// nothing


aplay -lL
null
    Discard all samples (playback) or generate zero samples (capture)
lavrate
    Rate Converter Plugin Using Libav/FFmpeg Library
samplerate
    Rate Converter Plugin Using Samplerate Library
speexrate
    Rate Converter Plugin Using Speex Resampler
jack
    JACK Audio Connection Kit
oss
    Open Sound System
pipewire
    PipeWire Sound Server
pulse
    PulseAudio Sound Server
speex
    Plugin using Speex DSP (resample, agc, denoise, echo, dereverb)
upmix
    Plugin for channel upmix (4,6,8)
vdownmix
    Plugin for channel downmix (stereo) with a simple spacialization
default
    Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=PCH
    HDA Intel PCH, CX8200 Analog
    Default Audio Device
front:CARD=PCH,DEV=0
    HDA Intel PCH, CX8200 Analog
    Front output / input
surround21:CARD=PCH,DEV=0
    HDA Intel PCH, CX8200 Analog
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
    HDA Intel PCH, CX8200 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
    HDA Intel PCH, CX8200 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
    HDA Intel PCH, CX8200 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
    HDA Intel PCH, CX8200 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
    HDA Intel PCH, CX8200 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
usbstream:CARD=PCH
    HDA Intel PCH
    USB Stream Output
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CX8200 Analog [CX8200 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0



pactl list cards
Card #1
	Name: alsa_card.pci-0000_00_1f.3
	Driver: module-alsa-card.c
	Owner Module: 7
	Properties:
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xec340000 irq 137"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9d71"
		device.product.name = "Sunrise Point-LP HD Audio (ThinkPad X1 Carbon 5th Gen)"
		device.form_factor = "internal"
		device.string = "0"
		device.description = "Built-in Audio"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	Profiles:
		input:analog-stereo: Analog Stereo Input (sinks: 0, sources: 1, priority: 32833, available: yes)
		output:analog-stereo: Analog Stereo Output (sinks: 1, sources: 0, priority: 39268, available: yes)
		output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (sinks: 1, sources: 1, priority: 39333, available: yes)
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
	Active Profile: output:analog-stereo+input:analog-stereo
	Ports:
		analog-input-internal-mic: Internal Microphone (type: Mic, priority: 8900, latency offset: 0 usec, availability unknown)
			Properties:
				device.icon_name = "audio-input-microphone"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-input-mic: Microphone (type: Mic, priority: 8700, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "audio-input-microphone"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-output-speaker: Speakers (type: Speaker, priority: 10000, latency offset: 0 usec, availability unknown)
			Properties:
				device.icon_name = "audio-speakers"
			Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-output-headphones: Headphones (type: Headphones, priority: 9900, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "audio-headphones"
			Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo

So no mention of any other sound cards as I would have expected.

Last edited by vwvw (2022-12-01 15:22:38)

Offline

#4 2022-12-01 15:40:31

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 23,922

Re: No audio sink for DELL Ultrasharp 2721DE

There shouldn't be nothing in dmesg unless your buffer has overflown already... 

sudo journalctl -b | grep -iE 'snd|usb'

maybe the entirety of the thing ungrepped as well so we get more context: https://wiki.archlinux.org/title/List_o … n_services

Judging by the lacking dmesg, did you not reboot for a while? Did you ran a kernel update and haven't rebooted since? Loading a new usb sound card mandates the kernel being able to load snd-usb-audio which it can't if you are on an old kernel: 

pacman -Qs linux
uname -a

Online

Pages: 1

Board footer

Powered by FluxBB